New, inexpensive and simple 3D printable device for nephelometric and fluorimetric determination based on smartphone sensing

Vidal, Ezequiel; Lorenzetti, Anabela S.; Aguirre, Miguel; Canals, Antonio; Domini, Claudia E.

doi:10.1039/d0ra02975k

Cited by 12 publications

(10 citation statements)

References 28 publications

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“…[53] Aiming to demonstrate the advantages of the method towards the formation and utilization of NADES in the field, the extraction and detection of chlorophyll A from Vitis vinifera leaves was performed. As previously described, an smartphone-based fluorometer [18,47] was used for these experiments. To select the best solvent for the extraction of chlorophyll A, the extraction capacity of the ten NADES obtained by the solar preparation method was initially investigated.…”

Section: Chlorophyll Determination In Vitis Vinifera Leavesmentioning

confidence: 99%

“…[42][43] These approaches represent a significant departure from the traditional to of 3D printing in analytical chemistry, where this type of manufacturing has been primarily used to create of physical objects previously designed to fulfill specific analytical needs. [44][45][46] While our groups have previously demonstrated the possibility to construct instruments for spectrophotometric and fluorometric measurements, [18,[47][48] the iterative nature of additive manufacturing, coupled with the recyclable materials used, makes them ideal complements to meet green chemistry requirements.…”

Section: Introductionmentioning

confidence: 99%

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On‐Site Preparation of Natural Deep Eutectic Solvents Using Solar Energy

et al. 2022

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Natural Deep Eutectic Solvents (NADES) are currently one of the greenest solvents for both academic and industrial purposes. Despite their advantages with respect to traditional solvents, their synthesis typically requires access to power, limiting their applicability to address problems in remote locations. Addressing this shortcoming, this report describes the possibility to use a 3D‐printed solar concentrator for the on‐site preparation of NADES, approach that not only provides a simple way to adjust synthetic conditions but also represents the greenest method for their synthesis reported to date. To highlight the advantages of the approach, the preparation of twelve representative NADES was performed and benchmarked against one of the most traditional methods, involving heating and stirring. According to our results, most of the NADES tested could be prepared on‐site in <40 min and with minimal hardware requirements. Additionally, the NADES prepared were used for the extraction of chlorophyll from Vitis vinifera leaves, prior to its quantification using a smartphone and a 3D printed fluorometer. The greenness of the proposed method (calculated using the AGREE software) rendered a score of 0.86, the best reported to date.

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Section: Chlorophyll Determination In Vitis Vinifera Leavesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On‐Site Preparation of Natural Deep Eutectic Solvents Using Solar Energy

et al. 2022

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“…An ultrasonic probe (Sonics Vibra Cell VCX 130, titanium probe tip of 9.5 mm diameter, 20 kHz frequency, 130 W nominal power) was employed for NADES preparation and curcumin extraction. For fluorescence detection, a smartphone-based 3Dprintable device previously designed by our group 34 and slightly modified was employed. An ultraviolet (UV) light-emitting diode (LED) (390 nm, 0.1 W, 8 mm, Patagoniatec, Buenos Aires, Argentina) was used.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Native Fluorescent Natural Deep Eutectic Solvents for Green Sensing Applications: Curcuminoids in Curcuma longa Powder

Lorenzetti

Vidal

Silva

et al. 2021

ACS Sustainable Chem. Eng.

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Natural deep eutectic solvents are a trending topic in Green Chemistry. These solvents present high solubilization capacity, reusability, tunable properties, simple preparation, biodegradability, safety, high availability, and low cost, making them excellent candidates for analytical applications. In this work, a new family of fluorescent eutectic systems is described, with the fluorescence property being unknown and unused so far. For this purpose, a novel preparation method using an ultrasound probe was employed, by means of an innovative single-step procedure, that included the preparation of FCH (fructose, citric acid, and water, 1:1:5 molar ratio) and the extraction/determination of curcuminoids from Curcuma longa powder. This methodology was successfully carried out by employing a portable and inexpensive 3D-printed fluorometer and a smartphone. In this way, extraction efficiencies between 90 and 106%, relative to the NIST reference method, were obtained in just 3.40 min. Besides, the greenness of the new methodology was evaluated by employing the AGREE metric, showing that the developed approach is >2.5 times greener than previously published works for curcuminoid determination. This groundbreaking procedure is robust, versatile, and simple to implement, does not require sophisticated apparatus or instruments in the detection step, and, mainly, agrees with Green Analytical Chemistry (GAC) principles.

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“…Moreover, as an alternative to conventional chromatography, the detection of analytes using digital image measurements (DIM) has emerged as an increasingly viable and practical strategy. [59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77][78] DIMs are based on colorimetric analysis by scanning images on electronic devices such as smartphones and digital cameras. Compared to digital cameras, smartphones are easily operable, lightweight, portable, and widely used for image capture.…”

Section: Introductionmentioning

confidence: 99%

Development of an Environmentally Friendly Extraction Method Using Smartphone-Based Digital Images for the Determination of Total Sulfonamides in Meat Samples

Maroubo¹,

Melchert²

2023

J. Braz. Chem. Soc.

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Sulfonamides (SAs) are low-cost synthetic antimicrobials widely used in veterinary and human medicine to treat diseases and prevent infections. However, long periods of exposure to sulfonamides can cause adverse effects such as allergic reactions. This work aims to study dispersive solid-liquid microextraction as an alternative method for extracting total SAs in meat samples. The procedure uses a colorimetric reaction based on the formation of a pink compound (imine salt) to determine total sulfonamides (sulfamethazine, sulfadimethoxine, sulfathiazole) with digital measurements. A linear response was observed between 33-233 μg kg-1 for total sulfonamides, and the coefficient of variation (n = 11; 67 μg kg-1 of total SAs) and the limit of detection were estimated to be 0.63% and 10 μg kg-1, respectively. For a 750 mg meat sample, 0.11 mg of 4-dimethylaminocinnamaldehyde, 2.60 mg of sodium dodecyl sulfate, and 275 μL of 1-butanol were consumed per sample, and consequently, generating only 335 μL of residue. Besides this, addition-recovery tests were performed, resulting in a 71-100% recovery range, indicating the trueness of the proposed method.

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New, inexpensive and simple 3D printable device for nephelometric and fluorimetric determination based on smartphone sensing

Abstract: A new, inexpensive and easy to use 3D printable device was developed for nephelometric and fluorimetric determination.

Cited by 12 publications

References 28 publications

On‐Site Preparation of Natural Deep Eutectic Solvents Using Solar Energy

On‐Site Preparation of Natural Deep Eutectic Solvents Using Solar Energy

Native Fluorescent Natural Deep Eutectic Solvents for Green Sensing Applications: Curcuminoids in Curcuma longa Powder

Development of an Environmentally Friendly Extraction Method Using Smartphone-Based Digital Images for the Determination of Total Sulfonamides in Meat Samples

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